Container



April 29, 1947. w. H. INMAN couunmn Filed Dec. 9, 1944 2 Sheets-Sheet 1 INVENTOR.

April 29, 1947. w. H. INMAN -CONTAINER v Filed D60. 9, 1944 2 Sheets-Shut 2 Patented Apr. 29, 1947 Bloomer Bros. Company,'Newai-k, N. Y., a corporation of New York Application December 9,1944, Serial No. 567,489

Claims. (Cl. 229-31) This invention relates'to containers, and, more particularly, to containers especially adapted for the reception of frozen foods, delicatessen articles, bakery goods, and the like, one object being to provide a container of the above character made by cutting, scoring and folding a blank of cardboard, or other suitable material, so treated as to be vapor, moisture, water and greaseproof, andin a type of construction capable of being erected and strongly secured in erected condition, without gluing or other added fastening means, with the result that the whole blank may be subjected to waxing or other treatment, on both sides, to render it impervious.

Another object is the provision of a container of the above character having integral bottom and side walls so constructed with relation to one another and to the cover, as to afford, in erected condition,'a strong, substantiallyair and watertight carton, capable of effectively maintaining its shape and protecting the contents.

A further object is the provision of such a cart'on inwhich all of the side walls and the cover and its fiaps'are positively and securely looked together when erected and closed.

A further object is to produce such a carton so constructed that its parts may be readily unfastened, stripped from adhesion to frozen contents and flattenedinto a plane, so as to free the contents for removal as a whole.

Still afurther object is to afford a carton having the above'advantages and capable of being readily and economically erected by automatic machinery.

To these and other ends the invention resides in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawings:

Fig. 1 shows a one-piece, cut and scored blank, ready for folding to form a container embodying the present invention;

Fig. 2 is a perspective view of the container in erected and closed condition;

. 2 entire surface of both sides of which is coated, or otherwise treated, with paraflin, or other waxes, or cellulose lacquer, or other known substances, to render the same impervious to moisture, vapor, water and grease.

The blank is preferably scored, as indicated by multiple lining in the drawing, to form a bottom l0 and four side walls, II to M, inclusive, which,

I in the present instance, are rectangular in shape,

so as to produce, when folded vertically, a straight walled container. The adjacent pairs of side walls are integrally connected by bellows folds, or wings, l5 to l8, inclusive, each of generally rectangular shape with diagonal score lines, IE! to 22, inclusive, substantially bisecting the angles between adjacent walls, respectively, as shown. Wings, l5 and 18, have folding extensions, 23 and 24, respectively, preferably of the trapezoidal shape shown and forming parts of the securing means, as hereafter described. The score lines,

25 and 26, about which these extensions are folded, are provided with slits, 21 and 28, respectively, forming other parts of the securing means.

The outer edges of wings I! and I8 are provided with integrally extending lugs, 29 and 30, respec- Fig. 3 is a sid elevation of the same, partly broken away and partly in section;

Fig. 4 is a perspective view showing the side The invention is embodied, in the present instance, in a container made from a cardboard blank, such as shown in Fig. 1, cut from stock the 32, for cooperation with the slits 21 and 28, as hereafter described.

Side walls, ll, l2 and I3, have folding extensions 33, 34 and 35, respectively, forming top closure flaps for the erected container. Side wall I4 is integrally connected, at a scored fold line 35, with a cover section 31 having a folding securing panel or flap 38, and opposed locking flaps,

- 39 and 40. Securing flap 38 has its opposite ends extended to produce folding tabs, 4i and 42. The outer ends of the locking flaps, 39 and 40, are cut inwardly to produce on each a pair of oppositely extending locking shoulders, 43 and 44.

The blank is erected to form the container by folding the side walls, II to l4, inclusive, vertically upward, as usual, the wings, IE to l8, inelusive, being folded about the diagonal score lines l9-22 and projected outwardly for folding inwardly against the outer faces of the side walls, H and I3. The wings are of suflicient length to overlap substantially in each pair thereof, and as they are brought together, the extensions 23 and 24 of Wings 15 and ii are folded inwardly and downwardly, as shown in Fig. 4, to form guide troughs for slidably receiving and guiding the projecting ends of the other wings, ;l1 and [8, which latter are relatively depressed slightly to allow their lugs, 29 and 30, to spring upwardly through the slits, 21 and 28, thereby securely 3 interlocking and securely fastening together the wings of each pair. It will be noted that the lugs 29 and 30 are undercut so as to overhang and v wedgingly engage the corresponding ends of the slits 21 and 28, thereby wedgingly interlocking the wings together against relative vertical and lengthwise separating movements.

By means of this relatively simple manipulation, the four side walls are secured in erected relation, so as to strongly support them during and after filling. After being filled, the top 010-.

sure flap 34 is folded inwardly and the top closure flaps, 33 and 35, are folded over it, so as to effectively close three edges of the top opening, as shown in Fig. 5. The remaining edge of the top opening is then closed by folding down the cover 31 and folding its securing flap 38 down over the opposite side wall. The tabs, 4| and 42, at its opposite ends, are then folded horizontally around the corners of the container, over the'adjacent wings, as shown in Fig. 2. The locking flaps, 39 and 40, are then folded downwardly, nd their locking shoulders, 43 and 44, are slightly flexed or bent inwardly and inserted under the correpivotal folding connection of the flap with the cover, so as to further lock the cover in tightly closed connection with the side walls. During such closure of the container,'the lugs 29 and 30, particularly if provided with the scores 3| and 32, are engaged by the cover and flattened down over thetop edges of the wings through which they project so as to further interlock and firmly secure the wings together.

The folding scores between the bottom and side walls'and those of the wings, [5 to 18, inclusive, may be preliminarily bent or broken, if desired,

before shipping the flat blank, so astofacilitate erection of the container for use.

The side walls are integrally folded from the bottom and integrally connected with each other by the wings at the corners of the container, the wings and the adjacent side walls H and 13 being imperforate below their tops so as to form a fluidtight construction between these parts. The inwardly folded closure flaps, 33, 34 and 35, and the over-folded cover with its downwardly folded flaps, 38, 39 and 40, together with the means described for tightly locking the cover and its flaps in closed condition, all serve to afford a substantially water and air tight enclosure within the impervious material of the blank and eflectively seal in and protect the contents. The parts are so constructed and so interlocked as to insure a strong and rigid structure capable of reliably maintaining its shape and further protecting the contents. The parts are so shaped and arranged and moved to erected position, furthermore, as to be readily capable of rapid and economical erection by automatic machinery, as well understood in the art. As a further advantageous feature, when the container is used for frozen foods, the parts may be disconnected in a reverse order and laid flat, in the condition of the blank 1 those skilled in the-art, within the spirit of the site side walls, an extension at the top of one adjacent side walls and folded and overlapped in pairs against the outer sides of one pair of oppowing of each pair folded inwardly and downwardly over the top of the other wing thereof and having an opening at the line of fold thereof, and an upwardly projected lugat the top of the other of said wings engaged in and extending upwardly through said opening for locking said wings together, said wings and theadjacent side walls of said pair being imperforate and fluid tight below the tops thereof. r

2'. A carton made from a one piece blank, cut, scored and folded to form a bottom, upwardly folded side walls, wings foldably connected with adjacent side walls and folded and overlapped in pairs against the outer sides of one pair of oppo-* site side walls, an extension at the top of one wing of each pair folded inwardly and downwardly over the top of the other wing thereof and having an opening at the line of fold thereof, an upwardly 1 projected lug at the top of the other of said wings having an undercut end and being wedgingly engaged in and extending upwardly through said opening for wedgingly interlocking said wings together against relative verticaleandlengthwise separating movements, said wings and the adjafolded side walls, wings foldably connected with adjacent side walls and folded and overlapped in pairs against the outer sides of one pair of opposite side walls, an extension at the top of one wing of each pair folded inwardly and downwardly over the top of the other wing thereof and having an opening at the line of foldthereoi', a lug at the top of the other of said wings engaged in and extending upwardly above said opening for locking said wings together, said wings and the adjacent sidewalls of said pair being imperforate and fluid tight below the tops thereof, and a cover foldably connected with one of the other pair of side walls and provided with means for securing.

the same in closed position in which said upwardly extendinglugs are held by said 'coverin laterally folded relation to additionally: interlock said wings together. a

4. A carton made from a one piece 'bla'nk, out,

scored and folded to form a bottom, upwardly folded side walls, wings foldablyconnectedwith ad acent side walls and folded and overlapped in. pairs against the outer .sides of one pair of op posite side walls, an extension at the top of one wing of each pair folded inwardly and downfor securing wardly over the top of the other wing thereof and having an opening at the line offold thereof, a lug at the top of the other oisaid wings having an undercut end engaged in and extending up wardly above said opening for wedgingly interlocking said wings together against relative vertical and lengthwise separating movements, said wings and the adjacent wallsoi. said pair bein'g together against relative vertical and'lengthwise separating movements, said wings and the'adiacent walls or said pair being imperforate and fluid tight below the tops thereof, and a cover ioldably. connected with one of the other pair of side walls and having locking flaps at opposite sides thereof each formed with oppositely extending shoulders,

said locking flaps being folded over said wings with said shoulders wedginglyengaged under said folded side walls, wings foldably connected with adjacent side walls and rolded'and overlapped in pairs against the outer sides 01' one pair of opposite side walls, an extension at the top of one wing of each pair folded inwardly and downwardly over the top of the other wing thereof and having an opening at the line of fold thereof, a lug at the top of the other of said .wings having an-undercut 35 end engaged in v v and extending upwardly above said opening for wedgingly interlocking said wings wings for locking said cover in closed position in which said upwardly extending lugs are heldby said cover in laterally folded relation for additionally securing said wings and said carton in erecte shape s I nnrnnancns crren The following references are of ,record in the flle of this patent:

UNITED STATES PA'I'ENTS Number Name Date I 2,364,267 Buttery Dec. 5, 1944 2,206,304 Ringler July 2. 1940 847,314 I Burns Mar. 19, 1907 2,145,993 Pulsifer Feb. 7, 1939 2,324,893

Warsher et al. July 20,1943 Y 

